How long should you warm up a Duramax?

2-3 minutes is plenty unless it’s extremely cold and you didn’t plug in the block heater. You need just enough to get oil circulated and let the pistons warm up a little, no more than 10 minutes on a very cold day (-10 and colder).

How long should I let my LML warm up?

If you want a warm-ish interior you can let it run for a few minutes, but if you don’t mind the cold, you won’t be doing any harm by starting it and going after just a few seconds to let the oil circulate.

How do you start a Duramax?

Turn the ignition key to ON/RUN. After the wait-to-start light goes off, turn the ignition key to START. If the light does not go off, wait a few seconds, then try starting the engine again. See your dealer as soon as you can for a starting system check.

Is it bad to let diesel trucks idle?

Most engine manufacturers recommend that newer diesel engines idle for no more than 3 minutes before driving. Letting an engine idle actually does more damage to the engine than starting and stopping. Running an engine at idle causes twice the wear on internal parts com- pared to driving at highway speeds.

Should you let a diesel idle before turning it off?

In any case, letting your diesel idle for anything more than a short duration is a bad idea because while the engine will use little fuel, what fuel it does burn will not combust completely because the operating temperature is too low. The best rule is, if you’re not underway, turn off the engines.

What causes high oil pressure on Duramax?

Dirty or contaminated oil filter: The oil filter is there to filter out impurities from the engine oil. Over time, particles from dust, soot, rust, and gum get deposited in the filter and begin clogging the system. This leads to more resistance and higher oil pressure.

What should the oil pressure be on a 2019 Duramax diesel?

GM publishes the oil pressure relief valve opening value is 104-114 psi, so, until the engine oil sees some temperature a high reading may be expected. The recommended oil is a SAE 15W-40, CJ-4 and using any other oil may affect the dashboard gauge readings.

At what temperature should I plug in my Duramax diesel?

Its just a worktruck. I plug mine in as soon as its below freezing. roger24 said: Certain years of trucks will throw codes at start up if they are plugged in for long periods of time if the ambient air temp is in the 20-30 degree range.

Can you start Duramax while plugged in?

It won’t hurt anything to start it while plugged in.